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CBSE Class 10 Mathematics Solved Sample Papers 10th Mathematics - SA2-Solved Sample Paper-K151 10th Mathematics - SA2-Solved Sample Paper-K152 10th Mathematics - SA2-Solved Sample Paper-K153 10th Mathematics - SA2-Solved Sample Paper-K154 10th Mathematics - SA2-Solved Sample Paper-K155 Download File CBSE Mathematics Sample Papers March 2015 10th Maths SA2 Sample paper 2015[JST101501] 10th Maths SA2 Sample paper 2015[JST101502] 10th Maths SA2 Sample paper 2015[JST101503] 10th Maths SA2 Sample paper 2015[JST101504] 10th Maths SA2 Sample paper 2015[JST101505]            Download File

Xth ENGLISH COMMUNICATIVE SA_II_Question Paper [61005] Download File Xth ENGLISH COMMUNICATIVE SA_II_Question Paper Solution [61005] Download File Xth ENGLISH COMMUNICATIVE SA_II__Question Paper [2018] Download File Xth ENGLISH COMMUNICATIVE SA_II_Question Paper Solution [2018] Download File 10th Sample Paper for Sanskrit Set-01 Download File 10th Sample Paper for Sanskrit Set-01[Solution] Download File 10th Sample Paper for Sanskrit Set-02 Download File 10th Sample Paper for Sanskrit Set-02[Solution] Download File Xth SAMPLE PAPER SOCIAL SC. SOLVED 2014-1 Download File Xth SAMPLE PAPER SOCIAL SC. SOLVED 2014-2 Download File 10th Maths Solved Sample Paper 2014 - 1 Download File

Question: Why plants do not utilize nitrogen directly from atmosphere? Ans. Most of the plants cannot utilise nitrogen directly from the atmosphere. They use nitrogen only when it is converted into nitrates and nitrites by the process nitrogen fixation. Question: Name the substance that reduces the amount of dissolved oxygen in water. Ans. Excessive growth of phytoplanktons reduces dissolved oxygen level in water Question: Name the organisms found to be very sensitive to the levels of contaminants like sulphur dioxide in the air. Ans. Lichens Question: What do you understand by the term ‘Natural resources’? Ans. Natural resources are the variety of substances that human beings get from the nature to meet their basic needs. Question: What is strip-cropping? Ans. Strip-cropping is the planting of crops in rows or strips to check flow of water. It is practiced in the sloping areas of hills to check soil erosion Question: What is greenhouse effect? How is it caused? Ans. Greenho

Science Sample Paper -2015 Section A 1. If the equation kx2+ 4x+ k=0 has two equal roots, then (a) k = ±2 (b) k = 0 (c) k = 2 (d) none of these 2. If the sum of n terms of an A.P., is 2n2 +4n, then its nth term is (a) 4n + 2 (b) 4n + 5 (c) 10n - 4 (d) none of these 3. If tangents TA and TB from a point T to a circle with center O are inclined to each other at an angle of 70° then <TOA is equal to (a)80° (b) 70° (c) 55° (d) 50° 4. To divide a line segment AB in the ratio 5:3, first a ray AX is drawn so that < BAX is an acute angle and then at equal distances points are marked on the ray AX such that the minimum number of these points is (a) 12 (b) 11 (c) 10 (d) 8 5. If the circumference and area of a circle are numerically equal, then diameter of the circle is  (a)2x (b) 2 (c) 4 (d) 4x 6. The number of solid spheres, each of diameter 2 cm that could be moulded to form a solid metal cylinder of height 45 cm and diameter 4 cm is (a)14 (b) 15 (c) 135 (d)